sys/arch/evbppc/explora/dev/com_elb.c

   1 /*      $NetBSD: com_elb.c,v 1.7 2008/04/28 20:23:17 martin Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Juergen Hannken-Illjes.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: com_elb.c,v 1.7 2008/04/28 20:23:17 martin Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/conf.h>
  37 #include <sys/device.h>
  38 #include <sys/systm.h>
  39 #include <sys/tty.h>
  40
  41 #include <machine/bus.h>
  42
  43 #include <dev/ic/comreg.h>
  44 #include <dev/ic/comvar.h>
  45
  46 #include <evbppc/explora/dev/elbvar.h>
  47
  48 struct com_elb_softc {
  49         struct com_softc sc_com;
  50         void *sc_ih;
  51 };
  52
  53 static int      com_elb_probe(device_t, cfdata_t , void *);
  54 static void     com_elb_attach(device_t, device_t, void *);
  55
  56 CFATTACH_DECL_NEW(com_elb, sizeof(struct com_elb_softc),
  57     com_elb_probe, com_elb_attach, NULL, NULL);
  58
  59 int
  60 com_elb_probe(device_t parent, cfdata_t cf, void *aux)
  61 {
  62         struct elb_attach_args *oaa = aux;
  63
  64         if (strcmp(oaa->elb_name, cf->cf_name) != 0)
  65                 return 0;
  66
  67         return (1);
  68 }
  69
  70 void
  71 com_elb_attach(device_t parent, device_t self, void *aux)
  72 {
  73         struct com_elb_softc *msc = device_private(self);
  74         struct com_softc *sc = &msc->sc_com;
  75         struct elb_attach_args *eaa = aux;
  76         bus_space_handle_t ioh;
  77
  78         sc->sc_dev = self;
  79
  80         bus_space_map(eaa->elb_bt,
  81             _BUS_SPACE_UNSTRIDE(eaa->elb_bt, eaa->elb_base),
  82             COM_NPORTS, 0, &ioh);
  83         COM_INIT_REGS(sc->sc_regs, eaa->elb_bt, ioh,
  84             _BUS_SPACE_UNSTRIDE(eaa->elb_bt, eaa->elb_base));
  85
  86         sc->sc_frequency = COM_FREQ;
  87
  88         com_attach_subr(sc);
  89
  90         intr_establish(eaa->elb_irq, IST_LEVEL, IPL_SERIAL, comintr, sc);
  91 }